Damage to Flash memory in Atmega. Old Fusebit settings did not protect. Atmega for programming. New good fusebit http://sio2sd.gucio.pl/wiki/Hardware_en
See also http://atariage.com/forums/topic/179038-what-happened-to-sio2sd-wiki-site/page-2?do=findComment&comment=2269431

@tmp - thanks for update firmware
menu, cursor left/right = pages
menu, cursor on down/up = pages, This is ok
but what if the name is too long (>38 sings), how to see the end?
search: SD card 4GB = ok, super works !
search: new color backround
I must correct my collection, rename polish letter to unicode (or better atascii), example Ł to L https://en.wikipedia.org/wiki/Polish_alphabet#Computer_encoding
Do you plan to issue control documentation? What they are used for: $D500-D507, D5FF, BFF0
I added a game, which you will not break: left button card + Reset. It must be a cold start.
It's good that I have QMEG
Pac Man (-)(Day, Martin)(US).xex